So I just got an 87 us marine force 125 and the guy had drained the lower unit and said when he took out the drain plug he lost it but I figured no big deal ill just buy a new one but turns out it was the clutchpin bolt in the side not the drain plug and in the owners manual it says not to remove that. So can I just get a new one and put it in and go or do i need to do anything before i reinstall the new one . Any and all help would be great.